Unknown white, powdery substance found at FCC

An unknown white, powdery substance was found in the Federal Correction Complex's mail room Tuesday, according to information from the complex.

During the routine screening of inmate mail a staff member found the substance. The area was secured and the substance was detained. Upon initial testing the substance appeared to not be of any biological type, officials said.

Three workers who were exposed to the substance were evaluated by a medical staff. No other workers or inmates were exposed to the substance.